* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Friday, July 11, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Immersive sports and entertainment venue Cosm set to build its 5th location in Cleveland – WKYC

    Cosm Reveals Exciting Vision for Its 5th Immersive Sports and Entertainment Venue in Cleveland

    Monumental Sports & Entertainment’s Samantha Brady on the Power of the RSN’s Direct-to-Consumer Streaming Service Monumental+ – Sports Video Group

    Samantha Brady Reveals How Monumental+ is Transforming Sports Streaming with Direct-to-Consumer Access

    Moses Singer Welcomes Entertainment and Intellectual Property Partner Frederick Bimbler – Yahoo Finance

    Moses Singer Expands Team with New Entertainment and Intellectual Property Partner Frederick Bimbler

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Magicians and Battlebots light up Las Vegas entertainment scene – KSNV

    Magicians and Battlebots Take Las Vegas Entertainment by Storm

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    SMPTE Opens Early Bird Registration for Media Technology Summit – TVTechnology

    SMPTE Launches Early Bird Registration for Exciting Media Technology Summit

    Google Fiber puts Nokia network slicing technology to the test – Fierce Network

    Google Fiber Puts Nokia’s Network Slicing Technology to the Ultimate Test

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    Technology And Construction Names Join Top Stock Lists: Check Out Additions To IBD 50, Big Cap 20 And More – Investor’s Business Daily

    Technology and Construction Leaders Surge Into Top Stock Rankings: See the Latest Additions to IBD 50, Big Cap 20, and More

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Immersive sports and entertainment venue Cosm set to build its 5th location in Cleveland – WKYC

    Cosm Reveals Exciting Vision for Its 5th Immersive Sports and Entertainment Venue in Cleveland

    Monumental Sports & Entertainment’s Samantha Brady on the Power of the RSN’s Direct-to-Consumer Streaming Service Monumental+ – Sports Video Group

    Samantha Brady Reveals How Monumental+ is Transforming Sports Streaming with Direct-to-Consumer Access

    Moses Singer Welcomes Entertainment and Intellectual Property Partner Frederick Bimbler – Yahoo Finance

    Moses Singer Expands Team with New Entertainment and Intellectual Property Partner Frederick Bimbler

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Magicians and Battlebots light up Las Vegas entertainment scene – KSNV

    Magicians and Battlebots Take Las Vegas Entertainment by Storm

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    SMPTE Opens Early Bird Registration for Media Technology Summit – TVTechnology

    SMPTE Launches Early Bird Registration for Exciting Media Technology Summit

    Google Fiber puts Nokia network slicing technology to the test – Fierce Network

    Google Fiber Puts Nokia’s Network Slicing Technology to the Ultimate Test

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    Technology And Construction Names Join Top Stock Lists: Check Out Additions To IBD 50, Big Cap 20 And More – Investor’s Business Daily

    Technology and Construction Leaders Surge Into Top Stock Rankings: See the Latest Additions to IBD 50, Big Cap 20, and More

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Popular Theory Under Question: Global Warming’s Unexpected Impact on Fish Size

July 12, 2023
in Science
Popular Theory Under Question: Global Warming’s Unexpected Impact on Fish Size
Share on FacebookShare on Twitter

Global Warming Climate Change Planet Earth

A recent study disputes the idea that global warming will shrink water-breathing animals like fish, finding instead that warm water pollution creates larger, but younger fish due to increased growth and death rates. The research, which compared populations of Eurasian perch in waters heated by a nuclear power plant to those in a reference area, calls into question generalized climate change predictions and emphasizes the need for large-scale, semi-controlled experiments in natural settings.

A unique 24-year study on freshwater fish subjected to warm water pollution reveals alterations in growth and mortality rates, along with size modifications, however, the results don’t completely conform to initial predictions.

A new study recently published in the journal eLife challenges the theory that aquatic creatures like fish will diminish in size due to global warming.

The research indicated that while warmer water pollutants raised both the growth and mortality rates, the outcome was a population of younger, albeit larger fish. This discovery partially contradicts the general predictions about the impact of global warming on natural ecosystems, underscoring the need for these hypotheses to undergo rigorous, large-scale experimental validation.

As aquatic ecosystems become warmer, it is predicted that animals such as fish will grow faster at a young age but reach smaller body sizes as adults. This pattern has mainly been observed in small-scale experiments, and although some studies have tested this prediction in natural environments, these have mostly been carried out on fish species subjected to fishing, where the process of fishing itself can influence growth rates and body size.

“Studies into the effects of warming waters on fish from large-scale, semi-controlled experiments in natural settings are rare, yet they can provide unique insights,” says lead author Max Lindmark, researcher at the Swedish University of Agricultural Sciences, Department of Aquatic Resources, Lysekil, Sweden. “We used a unique study system to investigate how warm water pollution has changed the death rates, growth rates, and size of fish over many generations.”

Eurasian Perch

Image showing the Eurasian perch (Perca fluviatilis). Credit: Karel Jakubec

The team carried out their study in an enclosed coastal bay that has received cooling water from a nuclear power plant, making it 5–10°C warmer than the surrounding waters. They compared the fish species Eurasian perch from the enclosed bay and from a reference area in the adjacent archipelago over a 24-year time period. They combined data on catches with measurements of the fishes’ length-at-age (back-calculated throughout their life from “age rings” in hard structures), and then analyzed these using statistical models to investigate how the warm water pollution affected the age and size of the fish populations, as well as their growth and death rates.

While the researchers found statistically notable differences in estimated growth rates, death rates, and sizes of the fish populations between the heated and reference areas, not all of these changes were as they expected. Although female perch in the warm area grew faster, as the team anticipated, they continued to do so throughout life.

These fish, therefore, reached a large size-at-age – approximately 7–11% larger in the heated area at any age, when compared with the reference area. Moreover, the authors say the increase in the growth rate of younger fish due to warm water was so pronounced that even if death rates were higher because of warming, and resulted in a younger overall population of fish, the average size and relative abundance of larger fish was still higher in the heated area. This trend conflicts with the prediction that global warming would shrink fish over time, especially the large and old ones. In essence, ecosystem warming instead led to younger, but larger fish in this study.

“Our study provides strong evidence for warming-induced differences in growth and death rates among a natural population of an unexploited temperate fish species exposed to 5–10°C water temperature increases for more than two decades. These effects largely, but not completely, counteract each other – while the fish are younger, they are also larger on average,” says co-author Malin Karlsson, Water Manager at the Department of Nature and Environment, County Administrative Board of Västmanland, Sweden.

“These findings highlight that generalized predictions based on theories such as the temperature-size rule may have limited use for predicting changes at a population level and that both death rates and growth rates are important when studying temperature effects,” concludes senior author Anna Gårdmark, Professor at the Swedish University of Agricultural Sciences, Department of Aquatic Resources, Uppsala, Sweden.

“Although we only studied a single species, this unique climate change experiment suggests the effects of heating at the scale of a whole ecosystem, making its findings highly relevant in the context of global warming.”

Reference: “Larger but younger fish when growth outpaces mortality in heated ecosystem” by Max Lindmark, Malin Karlsson and Anna Gårdmark, 9 May 2023, eLife.
DOI: 10.7554/eLife.82996 

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/popular-theory-under-question-global-warmings-unexpected-impact-on-fish-size/

Tags: PopularscienceTheory
Previous Post

A New Mechanism Unveiled: Rapid Evolution of Multi-Drug Resistant Infections

Next Post

BREAKING: Northwestern Has Fired Head Coach Pat Fitzgerald

International call for freedom for environmentalist Onur Yılmaz – ANF English

International call for freedom for environmentalist Onur Yılmaz – ANF English

July 11, 2025
This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

July 11, 2025
Science Museum of Minnesota cutting more than 40 full-time employees – CBS News

Science Museum of Minnesota to Cut More Than 40 Full-Time Jobs

July 11, 2025
Doctors say we’ve been misled about weight and health – ScienceDaily

Doctors Reveal the Truth About Weight and Health That You’ve Been Misled About

July 11, 2025
Sierra Club breaks record for world’s largest display of origami fish to protest Line 5 – News From The States

Sierra Club Creates Giant Origami Fish to Break World Record and Protest Line 5

July 11, 2025
Senate Democrat: Trump economy full of ‘uncertainty,’ ‘chaos’ – The Hill

Senate Democrat Warns of ‘Uncertainty’ and ‘Chaos’ in Trump Economy

July 11, 2025
Arts and entertainment events happening July 10th-13th across the Mid-Ohio Valley – WTAP

Unmissable Arts and Entertainment Events Happening July 10th-13th in the Mid-Ohio Valley

July 11, 2025
World’s Premier Cancer Institute Faces Crippling Cuts and Chaos – KFF Health News

World’s Leading Cancer Institute Grapples with Devastating Cuts and Turmoil

July 11, 2025
South Korea’s Yoon detained for a second time over martial law – Al Jazeera

South Korea’s Yoon detained for a second time over martial law – Al Jazeera

July 11, 2025
2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

July 10, 2025

Categories

Archives

July 2025
MTWTFSS
 123456
78910111213
14151617181920
21222324252627
28293031 
« Jun    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (715)
  • Economy (738)
  • Entertainment (21,626)
  • General (15,825)
  • Health (9,775)
  • Lifestyle (745)
  • News (22,149)
  • People (740)
  • Politics (748)
  • Science (15,956)
  • Sports (21,236)
  • Technology (15,723)
  • World (721)

Recent News

International call for freedom for environmentalist Onur Yılmaz – ANF English

International call for freedom for environmentalist Onur Yılmaz – ANF English

July 11, 2025
This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

July 11, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version